Mathematics, 05.05.2020 21:45 mooncake9090
The electric cooperative needs to know the mean household usage of electricity by its non-commercial customers in kWh per day. They would like the estimate to have a maximum error of 0.12 kWh. A previous study found that for an average family the standard deviation is 1.2 kWh and the mean is 17.9 kWh per day. If they are using a 90% level of confidence, how large of a sample is required to estimate the mean usage of electricity? Round your answer up to the next integer.
Answers: 3
Mathematics, 21.06.2019 17:40, kayleeemerson77
The graph of h(x)= |x-10| +6 is shown. on which interval is this graph increasing
Answers: 2
The electric cooperative needs to know the mean household usage of electricity by its non-commercial...